How to Measure Crib Mattress Dimension Based on Crib
Measuring a crib to determine the required mattress size is an easy chore to accomplish. By using a tape measure, you can measure the metal spring frame and the rest of the crib dimensions to determine the size of the crib mattress necessary for your make and model of crib. Most crib mattress sizes are standardized now to meet regulations enforced by the United States Consumer Product Safety Commission, but occasionally you will find a mattress that is older or made in a foreign country that does not conform to these regulations. Measure the crib and the mattress to be sure.
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Instructions
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Using the tape measure, measure the width of the inside of the crib by placing the end of the tape measure on the outside edge on the left side of the metal spring frame and stretching the tape measure over the springs and to the right side edge of the frame. According to the US Consumer Product Safety Commission, "The interior of a full-size crib is 52 inches long by 28 inches wide." Write down the measurement.
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Using the tape measure, measure the length of the inside of the crib by putting the end of the tape measure on the edge of the metal spring frame at the head of the crib and stretching the tape measure across the spring frame to the edge of the spring frame at the foot of the crib. Write down the measurement.
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Determine the size of the necessary crib mattress according to the measurements of the inside metal spring frame of your crib. According to the US Consumer Product Safety Commission "To prevent head entrapment and suffocation between the mattress and crib sides, a mattress used in full-size cribs must be at least 27¼ inches by 51... inches with a thickness not exceeding 6 inches."
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Tips & Warnings
Requirements for cribs and crib mattresses as determined by the US Consumer Product Safety Commission can be found at http://www.cpsc.gov. Or you can write for the detailed requirements at: Consumer Product Safety Commission, Office of Compliance, Washington, D.C. 20207. Email the commission at: sect15@cpsc.gov
Check the crib mattress for splits, tears, rips or anything that could possibly cause your infant to become entangled, entrapped or snared on to avoid suffocation or choking. Older, secondhand crib mattresses are fine for use if they comply with the recommended measurements of the US Consumer Product Safety Commission.
